Optical waveguides – Temporal optical modulation within an optical waveguide – Electro-optic
Reexamination Certificate
2007-02-06
2007-02-06
Wood, Kevin S. (Department: 2874)
Optical waveguides
Temporal optical modulation within an optical waveguide
Electro-optic
C385S001000, C385S014000
Reexamination Certificate
active
11089895
ABSTRACT:
The present invention provides a highly-integrated and compact optical element and further provides an optical element having various functions such as lower driving voltage, chirping suppression and polarization-independency.The optical element comprising a substrate1consisting of a material having an electrooptic effect, top optical waveguides2-1an2-2formed on the top face of said substrate, bottom optical waveguides formed on the bottom face of said substrate, a top modulating electrode for controlling the phase of a light wave being propagated through said top optical waveguide, and a bottom modulating electrode for controlling the phase of a light wave being propagated through said bottom optical waveguide, is characterized in that at least one side edge of said substrate comprises output and input of said optical waveguides formed on said top and bottom faces, and a turnback element is located adjacent to said one side edge to guide the light wave from said output to said input.
REFERENCES:
patent: 6760493 (2004-07-01), Pruneri et al.
patent: 6950218 (2005-09-01), Sugiyama et al.
patent: 6950579 (2005-09-01), Ahn et al.
patent: 2005/0213863 (2005-09-01), Sugiyama et al.
patent: 2003-202530 (1983-07-01), None
patent: 07-325276 (1995-12-01), None
patent: 2001-350046 (2001-12-01), None
Courjal et al., “LiNBO3Mach-Zehnder Modulator with Chirp Adjusted by Ferroelectric Domain Inversion,”IEEE Photonics Technology Letters, vol. 14, No. 11, Nov. 2002, pp. 1509-11.
Ichikawa Junichiro
Kitamura Kenji
Kurimura Sunao
Oikawa Satoshi
Yamamoto Futoshi
Chapman and Cutler LLP
National Institute for Materials Science
Sumitomo Osaka Cement Co. Ltd.
Wood Kevin S.
LandOfFree
Optical device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3836374